linux-kernel - [PATCH] module: pr_debug when there is no version info

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Message-ID: <20250721045224.391745-1-wangjinchao600@gmail.com>
Date: Mon, 21 Jul 2025 12:52:22 +0800
From: Wang Jinchao <wangjinchao600@...il.com>
To: Luis Chamberlain <mcgrof@...nel.org>,
	Petr Pavlu <petr.pavlu@...e.com>,
	Daniel Gomez <da.gomez@...nel.org>,
	Sami Tolvanen <samitolvanen@...gle.com>
Cc: linux-kernel@...r.kernel.org,
	Wang Jinchao <wangjinchao600@...il.com>,
	linux-modules@...r.kernel.org
Subject: [PATCH] module: pr_debug when there is no version info

When there is no version information, modprobe and insmod only
report "invalid format".
Print the actual cause to make it easier to diagnose the issue.
This helps developers quickly identify version-related module
loading failures.
Signed-off-by: Wang Jinchao <wangjinchao600@...il.com>
---
 kernel/module/version.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/module/version.c b/kernel/module/version.c
index 2beefeba82d9..bc28c697ff3a 100644
--- a/kernel/module/version.c
+++ b/kernel/module/version.c
@@ -42,8 +42,10 @@ int check_version(const struct load_info *info,
 	}
 
 	/* No versions at all?  modprobe --force does this. */
-	if (versindex == 0)
+	if (versindex == 0) {
+		pr_debug("No version info for module %s\n", info->name);
 		return try_to_force_load(mod, symname) == 0;
+	}
 
 	versions = (void *)sechdrs[versindex].sh_addr;
 	num_versions = sechdrs[versindex].sh_size
-- 
2.43.0